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Statistics
In Problem 14.8 on page 481, you used land area of a property and age of a house to predict the fair market value (stored in GlenCove ). Using the results from that problem,a. at the 0.05 level of
Zagat's publishes restaurant ratings for various locations in the United States. The file Restaurants contains the Zagat rating for food, décor, service, and cost per person for a sample of 50
Referring to Problem 14.41 on page 502, you have decided to analyze whether there are differences in fixed acidity, chlorides, and pH between white wines and red wines (0 = white 1 = red).Using the
Human resource managers face the business problem of assessing the impact of factors on full-time job growth. A human resource manager is interested in the impact of full-time voluntary turnover and
A local supermarket manager wants to use two independent variables, customer age (in years) and whether the customer subscribes to the supermarket chain's health/wellness e-newsletters (coded as 1 =
To ensure a successful test marketing of its OmniPower energy bars, the OmniFoods marketing department has contracted with In-Store Placements Group (ISPG), a merchandising consulting firm. ISPG will
Using the data of Problem 15.6 on page 529, stored in HondaPrices, perform a natural logarithm transformation of the dependent variable (price). Using the transformed dependent variable and the age
Using the data of Problem 15.6 on page 529, stored in HondaPrices , perform a square-root transformation of the dependent variable (price). Using the square root of price as the dependent variable,
You need to develop a model to predict the assessed value of houses in Silver Spring, Maryland, based on the size of the house, whether it has a fireplace, the number of bedrooms, and the number of
A study was conducted on automobile engines to examine the relationship between engine speed measured in revolutions per minute (RPM) and engine torque with the goal of predicting engine torque.
The file HHIncome contains data from a sample of 25 U.S. cities. The variables collected for this sample are city median household income ($); unemployment rate (%); median home value ($); number of
An automotive sales manager wishes to examine the relationship between age (years) and sales price ($) for used Honda automobiles. The file HondaPrices contains data for a sample of Honda Civic LXs
Researchers wanted to investigate the relationship between employment and accommodation capacity in the European travel and tourism industry. The file EuroTourism contains a sample of 27 European
You work in the corporate office for a nationwide convenience store franchise that operates nearly 10,000 stores. The per-store daily customer count (i.e., the mean number of customers in a store in
Still concerned about ensuring a successful test marketing of its OmniPower bars, the marketing department of OmniFoods has contacted Connect2Coupons (C2C), another merchandising consultancy. C2C
The Craybill Instrumentation Company produces highly technical industrial instrumentation devices. The human resources (HR) director has the business objective of improving recruiting decisions
There has been much publicity about bonuses paid to workers on Wall Street. Just how large are these bonuses? The file Bonuses contains the bonuses paid (in $000) from 2000 to 2014. (Data extracted
Gross domestic product (GDP) is a major indicator of a nation's overall economic activity. It consists of personal consumption expenditures, gross domestic investment, net exports of goods and
The data in FedReceipt represent federal receipts from 1978 through 2014, in billions of current dollars, from individual and corporate income tax, social insurance, excise tax, estate and gift tax,
The file HouseSales contains the number of new, single- family houses sold in the U.S. from 1992 through 2014.a. Plot the data.b. Compute a linear trend forecasting equation and plot the trend
The data shown in the following table and stored in Solar Power represent the yearly amount of solar power generated by utilities (in millions of kWh) in the United States from 2002 through 2014:a.
The average salary of Major League Baseball players on opening day from 2000 to 2015 is stored in BBSalaries and shown below.a. Plot the data.b. Compute a linear trend forecasting equation and plot
The file Silver contains the following prices in London for an ounce of silver (in US$) on the last day of the year from 1999 to 2014:a. Plot the data.b. Compute a linear trend forecasting equation
The data in CPI-U reflect the annual values of the consumer price index (CPI) in the United States over the 50-year period 1965 through 2014, using 1982 through 1984 as the base period. This index
Although you should not expect a perfectly fitting model for any time-series data, you can consider the first differences, second differences, and percentage differences for a given series as guides
A time-series plot often helps you determine the appropriate model to use. For this problem, use each of the time series presented in the following table and stored in TsModel2:a. Plot the observed
Using the data for Problem 16.15 on page 569 that represent the number of new, single-family houses sold in the U.S. from 1992 through 2014 (stored in HouseSales ),a. Fit a third-order autoregressive
Using the data for Problem 16.12 on page 569 concerning the bonuses paid to workers on Wall Street from 2000 to 2014 (stored in Bonuses ),a. Fit a third-order autoregressive model to the bonuses paid
Using the data for Problem 16.17 on page 570 concerning the number of passenger cars produced in the United States from 1999 to 2014 (stored in CarProduction ),a. Fit a third-order autoregressive
You are using exponential smoothing on an annual time series concerning total revenues (in $millions). You decide to use a smoothing coefficient of W = 0.20, and the exponentially smoothed value for
Using the average baseball salary from 2000 through 2015 data for Problem 16.18 on page 570 (stored in BBSalaries ),Problem 16.18a. fit a third-order autoregressive model to the average baseball
Using the yearly amount of solar power generated by utilities (in millions of kWh) in the United States from 2002 through 2014 data for Problem 16.16 on page 569 (stored in SolarPower ),a. fit a
Using the new, single-family house sales data for Problem 16.15 on page 569 and Problem 16.27 on page 579 (stored in HouseSales ), a. perform a residual analysis for each model. b. compute the
Using the bonuses paid to workers on Wall Street data for Problem 16.12 on page 569 and Problem 16.28 on page 579 (stored in Bonuses),a. perform a residual analysis for each model.b. compute the
Using the number of passenger cars produced in the U.S. data for Problem 16.17 on page 570 and Problem 16.29 on page 579 (stored in CarProduction ), a. perform a residual analysis for each model. b.
Using the average baseball salary data for Problem 16.18 on page 570 and Problem 16.30 on page 579 (stored in BBSalaries ),Baseball salary data for Problem 16.18a. perform a residual analysis for
The data below (stored in DesktopLaptop ) represent the hours per day spent by American desktop/laptop users from 2008 to 2014.a. Plot the time series.b. Fit a three-year moving average to the data
Refer to the exponential model given in Problem 16.42.Exponential Model Problem 16.42a. What is the fitted value of the series in the fourth quarter of 2013?b. What is the fitted value of the series
The data in Toys R Us are quarterly revenues (in $millions) for Toys R Us from 1996-Q1 through 2015-Q1. (Data extracted from Standard & Poor's Stock Reports, November 1995, November 1998, and
Are gasoline prices higher during the height of the summer vacation season than at other times? The file GasPrices contains the mean monthly prices (in $/gallon) for unleaded gasoline in theUnited
The file Freezer from January 2012 to December 2014 contains the number (in thousands) of freezer shipments in the United States from January 2012 to December 2014. (Data extracted from
The file Silver-Q contains the price in London for an ounce of silver (in US$) at the end of each quarter from 2004 through 2014. (Data extracted from bit.ly/1afifi.)a. Plot the data.b. Develop an
The file Gold contains the price in London for an ounce of gold (in US$) at the end of each quarter from 2004 through 2014. (Data extracted from bit.ly/1afifi.)a. Plot the data.b. Develop an
The following data, stored in CoreAppliances provide the total number of shipments of core major household appliances in the U.S. from 2000 to 2014 (in millions).a. Plot the time series.b. Fit a
The U.S. Department of Labor gathers and publishes statistics concerning the labor market. The file Workforce contains data on the size of the U.S. civilian no institutional population of people 16
The monthly commercial and residential prices for natural gas (dollars per thousand cubic feet) in the United States from January 2008 through December 2014 are stored in Natural Gas. (Data extracted
As a consultant to an investment company trading in various currencies, you have been assigned the task of studying long-term trends in the exchange rates of the Canadian dollar, the Japanese yen,
The following data (stored in CoffeeExports ) represent the coffee exports (in thousands of 60 kg bags) by Costa Rica from 2006 to 2013:Year .....................Exports (thousands of 60 kg bags)2006
The file Audits contains the number of audits of corporations with assets of more than $250 million conducted by the Internal Revenue Service. (Data extracted from www.irs.gov.)a. Plot the data.b.
As part of the continuing strategic initiative to increase subscribers to the 3-For-All cable/phone/Internet services, the marketing department is closely monitoring the number of subscribers.To help
The Ashland Herald competes for readers in the Tri-Cities area with the newer Oxford Glen Journal (OGJ). Recently, the circulation staff at the OGJ claimed that their newspaper's circulation and
A study was conducted to determine whether any gender bias existed in an academic science environment. Faculty from several universities were asked to rate candidates for the position of
The data in the file BankMarketing are from a direct marketing campaign conducted by a Portuguese banking institution (Data extracted from S. Moro, R. Laureano and P. Cortez, "Using Data Mining for
The file HybridSales contains the number of domestic and imported hybrid vehicles sold in the United States from 1999 to 2014. (Data extracted from bit.ly/17hJk9H.) You want to be able to predict the
The file EuroTourism2 contains a sample of 27 European countries. Variables included are the number of jobs generated in the travel and tourism industry in 2014, the spending on business travel
The file Philly contains a sample of 25 neighborhoods in Philadelphia. Variables included are neighborhood population, median sales price of homes in 2014, mean number of days homes were on the
For this problem, use the following payoff table: ................................Action Event .................A ($)......... B ($) 1 .........................50........... 100 2
A vendor at a local baseball stadium must determine whether to sell ice cream or soft drinks at today's game. The vendor believes that the profit made will depend on the weather. The payoff table (in
The Islander Fishing Company purchases clams for $1.50 per pound from fishermen and sells them to various restaurants for $2.50 per pound. Any clams not sold to the restaurants by the end of the week
An investor has a certain amount of money available to invest now. Three alternative investments are available. The estimated profits ($) of each investment under each economic condition are
In Problem 19.3, you developed a payoff table for building a small factory or a large factory for manufacturing designer jeans. Given the results of that problem, suppose that the probabilities of
In Problem 19.4, you developed a payoff table to assist an author in choosing between signing with company A or with company B. Given the results computed in that problem, suppose that the
In Problem 19.5, you developed a payoff table for whether to purchase 100, 200, 500, or 1,000 Christmas trees. Given the results of that problem, suppose that the probabilities of the demand for the
Consider the following payoff table:..............................................................ActionEvent .............A ($).......... B ($)1 .....................50........... 1002
Consider the following payoff table:ActionEvent................... A ($)............. B ($)1 ............................50................ 102 ...........................300............... 1003
For this problem, use the following payoff table: ..............................Action Event .........A ($)............... B ($) 1 .................50................... 10 2 ...............300
In Problem 19.12, a vendor at a baseball stadium is deciding whether to sell ice cream or soft drinks at today's game. Prior to making her decision, she decides to listen to the local weather
In Problem 19.14, an investor is trying to determine the optimal investment decision among three investment opportunities. Prior to making his investment decision, the investor decides to consult
In Problem 19.16, an author is deciding which of two competing publishing companies to select to publish her new novel. Prior to making a final decision, the author decides to have an experienced
How does expected monetary value (EMV) differ from expected opportunity loss (EOL)?
A manufacturer of designer jeans must decide whether to build a large factory or a small factory in a particular location. The profit per pair of jeans manufactured is estimated as $10. A small
What is the meaning of the expected value of perfect information (EVPI)?
What are the advantages and disadvantages of using expected monetary value (EMV) as compared to the return-to-risk ratio (RTRR)?
A supermarket chain purchases large quantities of white bread for sale during a week. The stores purchase the bread for $1.25 per loaf and sell it for $2.39 per loaf. Any loaves not sold by the end
The owner of a company that supplies home heating oil would like to determine whether to offer a solar heating installation service to its customers. The owner of the company has determined that a
The manufacturer of a nationally distributed brand of potato chips wants to determine the feasibility of changing the product package from a cellophane bag to an unbreakable container. The product
An entrepreneur wants to determine whether it would be profitable to establish a gardening service in a local suburb. The entrepreneur believes that there are four possible levels of demand for this
An author is trying to choose between two publishing companies that are competing for the marketing rights to her new novel. Company A has offered the author $10,000 plus $2 per book sold. Company B
A manufacturer of a brand of inexpensive felt-tip pens maintains a production process that produces 10,000 pens per day. In order to maintain the highest quality of this product, the manufacturer
The DellaVecchia Garden Center purchases and sells Christmas trees during the holiday season. It purchases the trees for $10 each and sells them for $20 each. Any trees not sold by Christmas day are
For the following payoff table, the probability of event 1 is 0.5, and the probability of event 2 is also 0.5:............................ActionEvent............. A ($)......... B ($)1
For the following payoff table, the probability of event 1 is 0.8, the probability of event 2 is 0.1, and the probability of event 3 is 0.1:..........................ActionEvent......... A ($)
For a potential investment of $1,000, if a stock has an EMV of $100 and a standard deviation of $25, what is thea. Rate of return?b. Coefficient of variation?c. Return-to-risk ratio?
A stock has the following predicted returns under the following economic conditions:Economic Condition ..............Probability.............. Return ($)Recession
StraightArrow Banking & Investments competes with EndRun Financial Services in the Tri-Cities area. Currently, StraightArrow is featuring its StraightDeal investment fund. Open StraightDeal.pdf
Give one possible sample of size 4 from each of the following populations: a. All daily newspapers published in the United States b. All companies listed on the New York Stock Exchange c. All
Consider the strength data for beams given in Example 1.2. a. Construct a stem-and-leaf display of the data. What app ears to be a representative strength value? Do the observations appear to be
The accompanying specific gravity values for various wood types used in construction appeared in the article "Bolted Connection Design Values Based on European Yield Model" (J. of Structural Engr.,
The accompanying summary data on CeO2 particle sizes (nm) under certain experimental conditions as read from a graph in the article "Nanoceria-Energetics of Surfaces, Interfaces and Water Adsorption"
Allowable mechanical properties for structural design of metallic aerospace vehicles requires an approved method for statistically analyzing empirical test data. The article "Establishing Mechanical
The accompanying data set consists of observations on shower-flow rate (L/min) for a sample of n = 129 houses in Perth, Australia ("An Application of Bayes Methodology to the Analysis of Diary
Do running times of American movies differ somehow from running times of French movies? The author investigated this question by randomly selecting 25 recent movies of each type, resulting in the
The article cited in Example 1.2 also gave the accompanying strength observations for cylinders:a. Construct a comparative stem-and-leaf display (see the previous exercise) of the beam and cylinder
The accompanying data came from a study of collusion in bidding within the construction industry ("Detection of Collusive Behavior," J. of Construction Engr. and Mgmnt, 2012: 1251-1258). No. Bidders
Every corporation has a governing board of directors. The number of individuals on a board varies from one corporation to another. One of the authors of the article "Does Optimal Corporate Board Size
The number of contaminating particles on a silicon wafer prior to a certain rinsing process was determined for each wafer in a sample of size 100, resulting in the following frequencies:a. What
For each of the following hypothetical populations, give a plausible sample of size 4: a. All distances that might result when you throw a football b. Page lengths of books published 5 years from
The article "Determination of Most Representative Subdivision" (J. of Energy Engr., 1993: 43-55) gave data on various characteristics of subdivisions that could be used in deciding whether to provide
The article cited in Exercise 20 also gave the following values of the variables y = number of culs-de-sac and z = number of intersections:a. Construct a histogram for the y data. What proportion of
The article "Statistical Modeling of the Time Course of Tantrum Anger" (Annals of Applied Stats, 2009: 1013-1034) discussed how anger intensity in children's tantrums could be related to tantrum
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